server/utils/middleware/isSupportedRepoProviders.js

// Middleware to validate that a repo provider URL is supported.
const REPO_PLATFORMS = ["github", "gitlab"];

function isSupportedRepoProvider(request, response, next) {
  const { repo_platform = null } = request.params;
  if (!repo_platform || !REPO_PLATFORMS.includes(repo_platform))
    return response
      .status(500)
      .text(`Unsupported repo platform ${repo_platform}`);
  next();
}
module.exports = { isSupportedRepoProvider };